Improvement in nut-lock



iiinittd gram LEVI L. DEWEESE,

0F CANTON, OHIO.

Letters Patent No. 91,724, dated June 22, 1869.

IMPROVEMENT m NUT-LOCK The Schedule referred to in these Letters Patent and making part of the name.

reference beine. had to the accompanying drawings,

and to the letters of reference marked thereon.

The nature of my in rention consists in the construe tion and arrangement of a bolt and nut-fastening, whereby the nut Willbecome perfectly secure, so that itcnunot, in any possible way. work loose.

In order to enable others skilled in the art to which myizivention appertnius, to make and use the same, 1 will now proceed to describe its construction and operation, referring to the annexed drawings, which form apart of this specification, and in Which-- Figure 1 is a side elevation of the bolt and nut fastened by my device, and

Figure 2 is .1. plan view of the washer.

A represents a. screw-bolt, of any size and dimensions, having a. longitudinal groove, o along the ent-ir screw-portion of the bolt.

Thewasher B is made of a plate, with a hole of such size as to fit over or around the bolt A.

In this hole projects a tongue, b, of such size as to fit in the groove a, on the bolt.

One end of the washer B projects :asuitable distance beyond the bolt, and is pointed, as shown in fig. 2.

When the boltA has been inserted in its place, the washer B is slipped on the some, the tongue b extending into the groove a.

The nut C is then placed on the bolt tmd tightened, when the. pointed projecting end of the SVitSillBllS bent downward along the side of the nut.

By this means, it will be-found impossible to turn the out 0, without first bending the washer back again, and, consequently, the nut cannot work loose, thus making a. complete and perfect, though simple, nutlock.

Having thus fully described my invention,

What I claim as new, and desire to secure by Let ters Patent, is-

The arrangement of the longitudinally-grooved bolt A, washer B, tongue I), and nut 0, all substantially as shown and described.

In testimony that I claim the foregoing, I have hereunto 'set my hand, this 11th day of March, 1869.

LEVI L. DEWEESE.

Witnesses Gno. E. BALDWIN, W. H. VVYANT. 

